Advertising column



FIG. 1 is a front side view showing an advertising column my new design. The other two sides are identical to the front side view;

FIG. 2 is a left side / front side view thereof;

FIG. 3 is a top view thereof; and,

FIG. 4 is a bottom view thereof. 

I claim the ornamental design for an advertising column, as shown and described. 